Accession Number : AD0459097


Title :   COMBUSTION INSTABILITY. ANALYTICAL SURVEY


Descriptive Note : Surveys of Soviet-Bloc Scientific and Technical Literature


Corporate Author : LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/459097.pdf


Report Date : 10 Mar 1965


Pagination or Media Count : 70


Abstract : Liquid rocket engines are subject to a wide variety of types of combustion instability. The two basic instability modes are 'chugging,' a low- frequency instability mode which is caused by interaction between the chamber pressure and the injection flow rate fluctuations, and 'screaming,' a more harmful high-frequency, acoustic instability mode which may lead to burnout of the motor due to increased heat flux. Only two articles on low-frequency instability were found in Soviet open literature. Experimental studies or analyses of high-frequency instability which take into account actual engine operation, i.e., mixing, evaporation, dissociation fuel atomization, etc., were not found in the literature surveyed. However, several theoretical studies were found which deal with highfrequency instability under idealized conditions. The majority of the Soviet studies included in this report deal with the interaction of shock and pressure waves with the flame front. These studies are of high phenomenological interest and are indirectly applicable to combustion stability analysis.


Descriptors :   *LIQUID PROPELLANT ROCKET ENGINES , ABSTRACTS , BIBLIOGRAPHIES , COMBUSTION , COMBUSTION CHAMBERS , HIGH FREQUENCY , HIGH PRESSURE , INSTABILITY , INTERIOR BALLISTICS , LOW FREQUENCY , OSCILLATION , PROPULSION SYSTEMS , RAMJET ENGINES , SCIENTIFIC RESEARCH , SHOCK WAVES , USSR


Subject Categories : Liquid Propellant Rocket Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE